Many people like to use a stainless steel mug to make tea, which is harmful. Stainless steel cup contains chromium, which is a heavy metal, corrosion of stainless steel cup because the protective film is destroyed, chromium will be released, if sustained use will cause harm to the human body. According to experts, chromium is a blue-and-white polyvalent metal element, common divalent chromium, trivalent chromium, and hexavalent chromium. Hard and brittle, anti-corrosion, so it is mostly used in stainless steel and other products.
In clinical practice, the harm of hexavalent chromium and its compounds to the human body usually appears in three aspects. One is damage to the skin, resulting in dermatitis, pharyngitis, etc.; the second is damage to the respiratory system, causing pneumonia, bronchitis and other diseases; the third is damage to the digestive system, eating and even long-term exposure to chromate, can easily cause gastritis, gastric ulcers and intestinal ulcer. Excessive intake of hexavalent chromium, but also lead to kidney failure and even cancer.
Experts reminded that stainless steel cups should not be used to make tea. Not only that, it is also best not to use stainless steel ware.